Brake pedal jack



Filed Jan. 17, 1939 Inventor Ew/ flof a ank 1? {3 mad 1? Attorneys Sept.5, 1939- F. HOEPPNER BRAKE PEDAL JACK Filed Jan 17, 1939 2 Sheets-Sheet2 and A t iorneys Patented Sept. 5, 1939 UNITED STATES- BRAKE PEDAL JACKFred Hoeppner, Milwaukee, Wis.

Application January 1'7, 1939, Serial No. 251,440

1 Claim.

The present invention relates to new and useful improvements in brakepedal jacks for automobiles, particularly those which are equipped withhydraulic brakes, and has for its primary object 5 to provide, in amanner as hereinafter set forth, a device of this character which isadapted to automatically depress the brake pedal for expelling the fluidfrom the system when the usual relief valves of the brakes are opened,thus perlo mitting this draining operation to be expeditiously performedby a single man as distinguished from the present method which requirestwo men.

Another very important object of the invention ll is to provide a brakepedal jack of the aforementioned character which may be convenientlyadjusted to meet different conditions that may be encountered indifferent automobiles.

Other objects of the invention are to provide a brake pedal jack of thecharacter described which will be comparatively simple in construction,strong, durable, highly efiicient and reliable in use, compact and whichmay be manfactured at low cost.

25 All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein:

Figure 1 is a view in side elevation of a brake pedal jack constructedin accordance with the present invention.

Figure 2 is a view in side elevation, showing the device in use, aportion of an automobile body being shown in vertical section Figure 3is a view principally in vertical section through the device, showingthe pedal engaging 40 foot in extended position.

Figure 4 is a view substantially similar to Fig. 3 but showing the pedalengaging foot in retracted position.

Referring now to the drawings in detail, it will u be seen that theembodiment of the invention which has been illustrated comprises anelongated cylinder l of suitable metal, which cylinder may be of anydesired length and diameter. The

upper end of the cylinder I is closed, as at 2.

Threaded on the lower end of the cylinder l is a removable closure cap3.

Extending slidably through an opening which is provided therefor in thecap 3 is a metallic rod 4. On the upper end of the rod 4 is asubstantially cup-shaped piston 5 which is slidable in the cylinder l. Acoil spring 6 in the cylinder l yieldingly urges the piston 5 and therod 4 downwardly, the lower end portion of said coil spring beingengaged in said piston. Of course, the upper end of the coil spring 6 isengaged 5 with the upper end 2 of the cylinder l. Mounted on the lowerend of the rod 4 is an arcuate foot I which is engageable with the brakepedal to be depressed, as at '8. This is shown to advantage in Fig. 2 ofthe drawings. The reference 10 numeral 9 designates a portion of anautomobile body. The instrument board of the vehicle is indicated at H.

Rising from the upper end 2 of the cylinder l is a longitudinallyextending stationary rod I2. 16 A head I3 is provided on the upper endof the stationary rod 12. Loosely mounted on the stationary rod I2 is aslidably adjustable catch or hook I4.

It is thought that the manner in which the de- 20 vice functions will bereadily apparent from a consideration of the foregoing. Briefly, thefoot I is engaged with the brake pedal 8 and the spring;

8 is compressed or placed under tension by pushing downwardly on thecylinder I. The position of the parts when this is done is shown toadvantage in Fig. 4 of the drawings. The hook I4 is then adjusted on thestationary rod [2 and engaged beneath the instrument board ll of thevehicle. Of course, the hook l4 may be engaged 80 with any othersuitable or convenient part of the vehicle, such as the steering wheel.With the device thus mounted in position with the coil spring 6 undertension, the brake pedal 8 is being urged downwardly. Then, when theusual relief valves are opened at the brakes of the vehicle the spring 6depresses the pedal 8 and holds it in this position thus ejecting thefluid from the brake system. The hook l4 automatically secures itself inadjusted position on the rod I2 by frictionally gripping said rod whensaid hook is cocked.

It is believedthat the many advantages of a brake pedal jack constructedin accordance with the present invention will be readily understood andalthough a preferred embodiment of the device is as illustrated anddescribed, it is to be understood that changes in the details ofconstruction and in the combination and arrangement of parts may beresorted to which will fall within the scope of the invention asclaimed.

What is claimed is: i

A brake pedal jack of the character described comprising, incombination, an elongated cylinder closed at one end, a removable cap onthe other end of said cylinder, a rod extending sliding the cylinderthereto, said hook being adapted to bind on the stationary rod whencooked for securing said hook in adjusted position, a retaining head forthe hook on the free end of the stationary rod, and a coil springmounted in the cylinder and having one end engaged with the closed endthereof and its other end engaged in 5 the piston, said coil springconstituting means for actuating the first named rod for depressing thebrake pedal.

FRED HOEPPVNER. 10

